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Vulnerability of Linux kernel: out-of-bounds memory reading via gadget_dev_desc_UDC_store

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via gadget_dev_desc_UDC_store() of the Linux kernel, in order to trigger a denial of service, or to obtain sensitive information.
Impacted systems: Debian, Linux, openSUSE Leap, Slackware, SLES, Ubuntu.
Severity of this alert: 2/4.
Creation date: 10/06/2020.
Références of this alert: CERTFR-2020-AVI-368, CERTFR-2020-AVI-376, CVE-2020-13143, DLA-2241-1, DLA-2241-2, DLA-2242-1, DSA-4698-1, DSA-4699-1, openSUSE-SU-2020:0801-1, SSA:2020-163-01, SUSE-SU-2020:1599-1, SUSE-SU-2020:1663-1, USN-4411-1, USN-4412-1, USN-4413-1, USN-4414-1, VIGILANCE-VUL-32501.

Description of the vulnerability 

An attacker can force a read at an invalid address via gadget_dev_desc_UDC_store...
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This threat impacts software or systems such as Debian, Linux, openSUSE Leap, Slackware, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer threat is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this cybersecurity bulletin.

Solutions for this threat 

Fixes for this vulnerability are not yet public.
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